Enzymatic Hydrolysis Lignin Epoxy Resin Modified Asphalt

Abstract

This paper studies the modification of petroleum asphalt with enzymatic hydrolysis lignin (EHL) epoxy resin. EHL epoxy resin was successfully synthesized by EHL, a novel eco-material with high chemical reactivity. Different amounts of EHL epoxy resin were compounded into AH-70 paving asphalt. The effect of EHL epoxy resin on modified asphalt was examined by penetration, soften point, thin film oven test (TFOT), ductilily tests. The results showed that EHL epoxy resin had marked effect on the high-temperatrue property of increasing softening point at the content of 2-9wt% and it had significantly effect on the low-temperature properties and aging resistance with EHL epoxy resin content of 2-9wt% in modified asphalts. TG analysis indicated that EHL epoxy resin had the high mass loss temperature than pure asphalt. Anti-aging property of asphalt was improved by compounding EHL epoxy resin with asphalt.

Green Epoxy Resin System Based on Lignin and Tung Oil and Its Application in Epoxy Asphalt

“…To the best of our knowledge, there is only one report in the literature on the modification of asphalt by enzymatic hydrolysis lignin (EHL) derived epoxy. 22 The results showed that the EHL epoxy shifted the softening point to a higher temperature and improved the aging resistance of asphalts. Still, the authors in that paper used EHLderived epoxy in combination with a bisphenol A type epoxy to modify the asphalt.…”

“…In this work, we studied the modification of asphalt binder using lignin-derived epoxy. To the best of our knowledge, there is only one report in the literature on the modification of asphalt by enzymatic hydrolysis lignin (EHL) derived epoxy . The results showed that the EHL epoxy shifted the softening point to a higher temperature and improved the aging resistance of asphalts.…”

Polarity of Cationic Lignin Polymers: Physicochemical Behavior in Aqueous Solutions and Suspensions

“…[11,12] Enzymatically hydrolyzed lignin, which is called hydrolysis lignin (HL), is a by-product of an enzymatic process for sugar production from lignocellulosic biomass, but it has a limited industrial use currently. [13][14][15] To valorize this lignin, cationic polymerization has been a promising method as it improves the water solubility and charge density of hydrolysis lignin. [16] Our previous studies focused on the polymerization of kraft lignin with [2-(acryloyloxy)ethyl]trimethyl ammonium chloride (ATAC), [2-(methacryloyloxy)ethyl] trimethyl ammonium methyl sulfate (METAM) and [2-(methacryloyloxy) ethyl] trimethylammonium chloride (METAC) in an acidic environment to produce cationic flocculants for simulated wastewater effluents.…”

“…As a natural macromolecule, lignin is one of the abundant resources of aromatic compounds with a three‐dimensional structure composed of phenylpropane connected by various linkages . Enzymatically hydrolyzed lignin, which is called hydrolysis lignin (HL), is a by‐product of an enzymatic process for sugar production from lignocellulosic biomass, but it has a limited industrial use currently . To valorize this lignin, cationic polymerization has been a promising method as it improves the water solubility and charge density of hydrolysis lignin .…”

Production and Application of Triblock Hydrolysis Lignin-Based Anionic Copolymers in Aqueous Systems

“…Lignin, a highly branched aromatic polymer, is now considered the main aromatic renewable resource with attractive properties, such as biodegradability, as well as antimicrobial and UV activities. , Enzymatically hydrolysis lignin (HL) is derived from the biofuel production process and has been recognized to have poor hydrophilicity and low reactivity, which impede its conversion to value-added products. − Therefore, the advancement in the applications of hydrolysis lignin (HL) necessitates the modification of its chemical structure. Numerous studies demonstrated that the polymerization of lignin with functional monomers is a promising approach for lignin valorization, which can enhance both the molecular weight and charge density of the lignin macromolecule. − Previously, the polymerization reaction of kraft lignin (KL) with acrylamide (AM) and acrylic acid (AA) , was studied for producing a lignin-based material with multifunctional applications.…”